| タイトル | Integrated Solar Disk Oscillation Measurements Using the Magneto-Optical Filter: Tests with a Two Station Network |
| 著者（英） | Rosati, P.; Cacciani, Alessandro; Ricci, D.; Smith, E.; Marquedant, R. |
| 著者所属（英） | Rome Univ. |
| 発行日 | 1988-12-01 |
| 言語 | eng |
| 内容記述 | The magneto-optical filter (MOF) was used to get high and intermediate l-modes of solar oscillations. For very low l-modes the imaging capability of the MOF is still attractive since it allows a pixel by pixel intensity normalization. However, a crude attempt to get very low l power spectra from Dopplergrams obtained at Mt. Wilson gave noisy results. This means that a careful analysis of all the factors potentially affecting high resolution Dopplergrams should be accomplished. In order to better investigate this problem, a nonimaging channel using the lock-in amplifier technique was considered. Two systems are now operational, one at JPL and the other at University of Rome. Observations in progress are used to discuss the MOF stability, the noise level, and the possible application in asteroseismology. |
| NASA分類 | SOLAR PHYSICS |
| レポートNO | 89N25850 |
| 権利 | Copyright, Distribution within the U.S. granted by agreement |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/232726 |
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